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应用科学学报 ›› 2005, Vol. 23 ›› Issue (1): 12-15.

• 论文 • 上一篇    下一篇

基于微分Riccati方程解的非线性指数型降维观测器

朱芳来   

  1. 桂林电子工业学院计算机系, 广西桂林 541004
  • 收稿日期:2003-09-25 修回日期:2004-04-02 出版日期:2005-01-31 发布日期:2005-01-31
  • 作者简介:朱芳来(1965-),男,广西兴安人,副教授,E-mail:flzhu816@263.ent
  • 基金资助:
    国家自然科学基金(60464001);广西省自然科学基金(桂科自0310003,0339069);桂教科研([2003]22)资助项目

Nonlinear Exponential Reduced-Order Observers Based on Differential Riccati Equation

ZHU Fang-lai   

  1. Computer Department, Guilin University of Electronic Technology, Guilin 541004, China
  • Received:2003-09-25 Revised:2004-04-02 Online:2005-01-31 Published:2005-01-31

PDF

97

被引次数

4

摘要： 在一微分Riccati方程有正定解的前提下,通过坐标变换方法对该类系统提出了一种指数型降维观测器设计方法,该观测器的增益矩阵取决于微分Riccati方程的正定解.通过对一实际模型的仿真分析,表明所提出的指数型降维观测器具有较好的状态估计性能.

关键词: 非线性系统, 降维观测器, 微分Riccati方程, 指数收敛

Abstract: The problems of observer design for nonlinear systems with linear output are discussed in this paper. Under the assumption that a differential Riccati equation is solvable, an exponential reduced-order observer is developed by means of coordinate transformation and the gain matrix of the proposed observer depends on the solution of the differential equation.The simulation results show that the performance of the proposed reducedorder observer is good.

Key words: nonlinear systems, differential Riccati equation, exponential convergence, reduced-order observer

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